| Common causes | Ocular tumors |
|---|---|
| Central retinal vein occlusion | Retinoplastoma |
| Branch retinal vein occlusion | Uveal melanomas |
| Proliferative diabetic retinopathy | Ciliary body medulloepithelioma |
| Caroid arterial obstruction | Vasoproliferative tumors of the retina |
| Central retinal artery occlusion | Ocular metastasis |
| Systemic diseases | Other causes |
|---|---|
| Juvenile myelomonocytic leucemia | Uveitis |
| Systemic lupus erythematosus | Purtscher’s retinopathy |
| Juvenile xanthogranuloma | Altered expression of aquaporins |
| Cryoglobulinemia type 1 | Familial amyloid polyneuropathy |
| Neurofibromatosis type 1 | Arteritis from cytomegalovirus retinitis |